Unlock instant, AI-driven research and patent intelligence for your innovation.

Seek servo control method for adapting to supply voltage variation and disk drive using the same

a technology of supply voltage variation and servo control method, which is applied in the direction of data recording, track finding/aligning, instruments, etc., can solve the problems of deteriorating performance and real system not being equal to the simple ideal model

Inactive Publication Date: 2008-02-19
SAMSUNG ELECTRONICS CO LTD
View PDF18 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach improves seek control performance by dynamically adjusting seek time according to supply voltage fluctuations, ensuring optimal seek operations even under standard voltage conditions.

Problems solved by technology

However, a real system is not equal to the simple ideal model due to various limitations.
As a result, there is a problem in that the seek performance deteriorates even in a standard voltage environment.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Seek servo control method for adapting to supply voltage variation and disk drive using the same
  • Seek servo control method for adapting to supply voltage variation and disk drive using the same
  • Seek servo control method for adapting to supply voltage variation and disk drive using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023]Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below to explain the present invention by referring to the figures.

[0024]The present invention is adapted to a disk drive for moving a transducer along a sinusoidal acceleration trajectory limited by a certain voltage across a disk surface. In particular, a seek time corresponding to a given seek length is based on limitation to a power voltage supplied to a voice coil motor (VCM) other than limitation to a current.

[0025]The transducer is integrated in a slider which is incorporated into a head gimbal assembly (HGA). The HGA is attached to an actuator arm for moving the transducer across the disk surface. Movement of the actuator arm and the transducer is controlled by a controller. The controller uses a seek routine and a servo contr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
seek lengthaaaaaaaaaa
supply voltageaaaaaaaaaa
voltageaaaaaaaaaa
Login to View More

Abstract

A seek servo control method and device for a disk drive device for performing seek servo control according to a variation in a power supply voltage for the disk drive. The seek servo control method includes: detecting a supply voltage for the disk drive; and adjusting a seek time according to a track seek length based on the detected supply voltage.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of Korean Patent Application No. 10-2005-0007981, filed on Jan. 28, 2005, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by referenceBACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a seek servo control method and device for a disk drive, and more particularly, to a seek servo control method and device for performing seek servo control according to a variation in a power supply voltage for the disk drive.[0004]2. Description of the Related Art[0005]In general, a disk drive, an example of a data storage apparatus, reads or writes data from or to a disk by using a magnetic head. As the disk drive has a tendency to have a high capacity, a high density, and a compact size, a bit per inch (BPI) in a rotational direction and a track per inch (TPI) in a radial direction of the disk drive become large. As...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(United States)
IPC IPC(8): G11B5/596
CPCG11B5/5547G11B21/10
Inventor CHU, SANG-HOONKIM, NAM-GUKPARK, CHEOL-HOON
Owner SAMSUNG ELECTRONICS CO LTD